Linux kernel SNMP NAT helper snmp_trap_decode() denial of service
| linux-snmp-nathelper-dos (26594) |  Low Risk |
Description:
The Linux kernel SNMP NAT helper could allow a remote attacker to cause a denial of service caused by a memory corruption vulnerability in the snmp_trap_decode() function. If the ip_nat_snmp_basic module is loaded and traffic is being NATed on port 161 or 162, a remote attacker could exploit this vulnerability to cause the system to crash.
Platforms Affected:
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- Canonical, Ubuntu 6.06 LTS
- Debian, Debian Linux 3.1
- Linux, Kernel 2.6.0
- Linux, Kernel 2.6.0 test9
- Linux, Kernel 2.6.0 test8
- Linux, Kernel 2.6.0 test7
- Linux, Kernel 2.6.0 test6
- Linux, Kernel 2.6.0 test5
- Linux, Kernel 2.6.0 test4
- Linux, Kernel 2.6.0 test3
- Linux, Kernel 2.6.0 test2
- Linux, Kernel 2.6.0 test11
- Linux, Kernel 2.6.0 test10
- Linux, Kernel 2.6.0 test1
- Linux, Kernel 2.6.1
- Linux, Kernel 2.6.1 rc3
- Linux, Kernel 2.6.1 rc2
- Linux, Kernel 2.6.1 rc1
- Linux, Kernel 2.6.10 rc1
- Linux, Kernel 2.6.10 rc2
- Linux, Kernel 2.6.10
- Linux, Kernel 2.6.10 rc3
- Linux, Kernel 2.6.11 rc4
- Linux, Kernel 2.6.11
- Linux, Kernel 2.6.11 rc1
- Linux, Kernel 2.6.11 rc5
- Linux, Kernel 2.6.11 rc3
- Linux, Kernel 2.6.11 rc2
- Linux, Kernel 2.6.11.1
- Linux, Kernel 2.6.11.10
- Linux, Kernel 2.6.11.11
- Linux, Kernel 2.6.11.12
- Linux, Kernel 2.6.11.2
- Linux, Kernel 2.6.11.3
- Linux, Kernel 2.6.11.4
- Linux, Kernel 2.6.11.5
- Linux, Kernel 2.6.11.6
- Linux, Kernel 2.6.11.7
- Linux, Kernel 2.6.11.8
- Linux, Kernel 2.6.11.9
- Linux, Kernel 2.6.12 rc1
- Linux, Kernel 2.6.12 rc2
- Linux, Kernel 2.6.12 rc3
- Linux, Kernel 2.6.12 rc4
- Linux, Kernel 2.6.12 rc6
- Linux, Kernel 2.6.12 rc5
- Linux, Kernel 2.6.12
- Linux, Kernel 2.6.12.1
- Linux, Kernel 2.6.12.12
- Linux, Kernel 2.6.12.2
- Linux, Kernel 2.6.12.22
- Linux, Kernel 2.6.12.3
- Linux, Kernel 2.6.12.4
- Linux, Kernel 2.6.12.5
- Linux, Kernel 2.6.12.6
- Linux, Kernel 2.6.13 rc7
- Linux, Kernel 2.6.13
- Linux, Kernel 2.6.13 rc6
- Linux, Kernel 2.6.13 rc5
- Linux, Kernel 2.6.13 rc4
- Linux, Kernel 2.6.13 rc3
- Linux, Kernel 2.6.13 rc2
- Linux, Kernel 2.6.13 rc1
- Linux, Kernel 2.6.13.1
- Linux, Kernel 2.6.13.2
- Linux, Kernel 2.6.13.3
- Linux, Kernel 2.6.13.4
- Linux, Kernel 2.6.13.5
- Linux, Kernel 2.6.14 rc2
- Linux, Kernel 2.6.14 rc5
- Linux, Kernel 2.6.14 rc4
- Linux, Kernel 2.6.14 rc3
- Linux, Kernel 2.6.14
- Linux, Kernel 2.6.14 rc1
- Linux, Kernel 2.6.14.1
- Linux, Kernel 2.6.14.2
- Linux, Kernel 2.6.14.3
- Linux, Kernel 2.6.14.4
- Linux, Kernel 2.6.14.5
- Linux, Kernel 2.6.14.6
- Linux, Kernel 2.6.14.7
- Linux, Kernel 2.6.15 rc3
- Linux, Kernel 2.6.15 rc1
- Linux, Kernel 2.6.15 rc2
- Linux, Kernel 2.6.15 rc4
- Linux, Kernel 2.6.15 rc5
- Linux, Kernel 2.6.15 rc6
- Linux, Kernel 2.6.15 rc7
- Linux, Kernel 2.6.15
- Linux, Kernel 2.6.15.1
- Linux, Kernel 2.6.15.11
- Linux, Kernel 2.6.15.2
- Linux, Kernel 2.6.15.3
- Linux, Kernel 2.6.15.4
- Linux, Kernel 2.6.15.5
- Linux, Kernel 2.6.15.6
- Linux, Kernel 2.6.15.7
- Linux, Kernel 2.6.16
- Linux, Kernel 2.6.16 rc3
- Linux, Kernel 2.6.16 rc4
- Linux, Kernel 2.6.16 rc5
- Linux, Kernel 2.6.16 rc6
- Linux, Kernel 2.6.16 rc7
- Linux, Kernel 2.6.16.1
- Linux, Kernel 2.6.16.10
- Linux, Kernel 2.6.16.11
- Linux, Kernel 2.6.16.12
- Linux, Kernel 2.6.16.13
- Linux, Kernel 2.6.16.14
- Linux, Kernel 2.6.16.15
- Linux, Kernel 2.6.16.16
- Linux, Kernel 2.6.16.17
- Linux, Kernel 2.6.16.18
- Linux, Kernel 2.6.16.2
- Linux, Kernel 2.6.16.3
- Linux, Kernel 2.6.16.4
- Linux, Kernel 2.6.16.5
- Linux, Kernel 2.6.16.6
- Linux, Kernel 2.6.16.7
- Linux, Kernel 2.6.16.8
- Linux, Kernel 2.6.16.9
- Linux, Kernel 2.6.2 rc1
- Linux, Kernel 2.6.2 rc2
- Linux, Kernel 2.6.2 rc3
- Linux, Kernel 2.6.2
- Linux, Kernel 2.6.3
- Linux, Kernel 2.6.3 rc4
- Linux, Kernel 2.6.3 rc3
- Linux, Kernel 2.6.3 rc2
- Linux, Kernel 2.6.3 rc1
- Linux, Kernel 2.6.4 rc1
- Linux, Kernel 2.6.4 rc2
- Linux, Kernel 2.6.4
- Linux, Kernel 2.6.4 rc3
- Linux, Kernel 2.6.5
- Linux, Kernel 2.6.5 rc1
- Linux, Kernel 2.6.5 rc2
- Linux, Kernel 2.6.5 rc3
- Linux, Kernel 2.6.6 rc3
- Linux, Kernel 2.6.6 rc2
- Linux, Kernel 2.6.6 rc1
- Linux, Kernel 2.6.6
- Linux, Kernel 2.6.7
- Linux, Kernel 2.6.7 rc2
- Linux, Kernel 2.6.7 rc1
- Linux, Kernel 2.6.7 rc3
- Linux, Kernel 2.6.8 rc4
- Linux, Kernel 2.6.8
- Linux, Kernel 2.6.8 rc3
- Linux, Kernel 2.6.8 rc1
- Linux, Kernel 2.6.8 rc2
- Linux, Kernel 2.6.8.1
- Linux, Kernel 2.6.9 rc3
- Linux, Kernel 2.6.9 rc4
- Linux, Kernel 2.6.9 rc1
- Linux, Kernel 2.6.9
- Linux, Kernel 2.6.9 rc2
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux 2006 X86_64
- Novell, Linux Desktop 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- Novell, UnitedLinux 1.0
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 ES
- RedHat, Linux Advanced Workstation 2.1 Itanium
- SuSE, SuSE Linux 10.1
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux Desktop 1.0
- SuSE, SuSE Linux Enterprise Server 8.0
- SuSE, SuSE Linux OpenExchange Server 4
- SuSE, SuSE Linux Retail Solution 8
- SuSE, SuSE Linux School Server
- SuSE, SuSE Linux Standard Server 8
- SuSE, SuSE SLES 9
- Volition, Red Faction 1.0
Remedy:
Upgrade to the latest version of Linux kernel (2.6.16.18 or later), available from The Linux Kernel Archives Web site. See References.
For Red Hat Linux:
Refer to RHSA-2006:0437-22 and RHSA-2006:0580-7 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux 4:
Refer to RHSA-2006:0617-15 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux:
Refer to DSA-1183-1 or DSA-1184-1 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:047 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:064 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Denial of Service
References:
- IBM Systems Support Web site, Support for HMC at https://www14.software.ibm.com/webapp/set2/sas/f/hmc/power5/install/v61.Readme.html#MH01110.
- The Linux Kernel Archives Web site, ChangeLog-2.6.16.18 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.18.
- The Linux Kernel Archives Web site, The Linux Kernel Archives at http://kernel.org/.
- ASA-2006-143: kernel security update (RHSA-2006-0580)
- ASA-2006-180: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8 (RHSA-2006-0437)
- ASA-2006-203: kernel security update (RHSA-2006-0617)
- BID-18081: Linux Kernel SNMP NAT Helper Remote Denial of Service Vulnerability
- CVE-2006-2444: The snmp_trap_decode function in the SNMP NAT helper for Linux kernel before 2.6.16.18 allows remote attackers to cause a denial of service (crash) via unspecified remote attack vectors that cause failures in snmp_trap_decode that trigger (1) frees of random memory or (2) frees of previously-freed memory (double-free) by snmp_trap_decode as well as its calling function, as demonstrated via certain test cases of the PROTOS SNMP test suite.
- DSA-1183: kernel-source-2.4.27 -- several vulnerabilities
- DSA-1184: kernel-source-2.6.8 -- several vulnerabilities
- MDKSA-2006:087: Updated kernel packages fixes netfilter SNMP NAT memory corruption
- OSVDB ID: 25750: Linux Kernel SNMP NAT Helper snmp_trap_decode() Function DoS
- RHSA-2006-0437: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8
- RHSA-2006-0580: kernel security update
- RHSA-2006-0617: kernel security update
- SA20225: Linux Kernel SNMP NAT Helper Denial of Service
- SA21983: Avaya Products Linux Kernel Multiple Vulnerabilities
- SA22174: Avaya Products Linux Kernel Multiple Vulnerabilities
- SECTRACK ID: 1016153: Linux Kernel Netfilter SNMP NAT Memory Bug Lets Remote Users Deny Service
- SUSE-SA:2006:042: kernel local privilege escalation
- SUSE-SA:2006:047: kernel security problems
- SUSE-SA:2006:064: Linux kernel 2.4 security problems
- US-CERT VU#681569: Linux Kernel may fail to properly handle SNMP packets
- USN-302-1: Linux kernel vulnerabilities
- VUPEN/ADV-2006-1916: Linux Kernel snmp_trap_decode() Remote Memory Corruption Vulnerability
Reported:
May 22, 2006
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
Copyright (c) 1994-2009 Internet Security Systems, Inc. All rights reserved worldwide.
For corrections or additions please email xforce@iss.net